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From: "jakub at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
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Subject: [Bug target/96879] [11 Regresssion] ICE in native_encode_rtx, at
 simplify-rtx.c:6482
Date: Tue, 13 Oct 2020 16:48:03 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D96879

--- Comment #5 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
lowpart_subreg will not handle CONST the way we'd need (it will just wrap t=
he
CONST into a SUBREG), but the question is if such imm rtxes can make it thr=
ough
there, because if the offset is non-constant or non-zero, we don't get to t=
his
path, it is only for the zero path.
If strip_offset_and_salt returns a SYMBOL_REF or LABEL_REF, then
aarch64_cannot_force_const_mem should return false for imt_mode !=3D ptr_mo=
de.
The question is what other constants can make it through, is that just
CONST_INTs etc. (i.e. not CONST)?=